Mimosa. POLYANDRIA MONOGYNIA. 563 
A native of Coromandel, It flowers in July and Au- 
gust, : : i 
40. M. Suma. R. : 
Arboreous, with remarkably white bark, twigs villous. 
Prickles stipulary, broad-based, straight. Leaves bipin- 
nate; pinne from ten to twenty pair; leaflets fifty pair. 
Spikes (from one to six) axillary, cylindric; corollets po- 
lyandrous. Bractes lanceolate. Legume linear, thin, from 
six to eight-seeded. 
_ Acaeia polycantha. Willd. 4. p. 1099. 
Sans. Shumee. 
Beng. Sai-kanta. 
A very common tree about Calcutta, and over Bengal, 
and is remarkably conspicuous on account of its white 
bark. Flowering time the rainy season. There isa large 
concave gland above the base of the petiole, and two or 
three between the last two or three pairs of pinne. 
41. M. Catechu. Linn. suppl. 439. 
Arboreous. Bark dark brown, armed with most acute, 
_ stipulary, recurved aculei. Leaves bipinnate ; pinne from 
ten to thirty pair ; leaflets as far as fifty pair; petioles arm- 
ed, Spikes axillary, cylindric. Bractes from lanceolate 
to triangular ; Corollets polyandrous. _ Legume brittle, li- 
near, thin, from six to eight-seeded. ~ 
Acacia Catechu. Willd. 4. p. 1079. 
42. M. Catechu. Medical observ. v. 5. p. 151, t. 4. 
Beng. Khira. 
Khadira in Sanscrit and Kudhir the name of the ex- 
tracts. 
The last five species are nearly allied to each other, and 
require no small degree of attention to point out their 
differences in a short definition. Probably they are equally 
fit for yielding the extract now called Catechu. Flo 
